Boat anchor



FIG. 1 is a front perspective view of a boat anchor.

FIG. 2 is a front elevational view of the boat anchor of FIG. 1.

FIG. 3 is a top plan view of the boat anchor of FIG. 1.

FIG. 4 is a side elevational view of the boat anchor of FIG. 1; and,

FIG. 5 is a bottom plan view of the boat anchor of FIG. 1. 

CLAIM The ornamental design for a boat anchor, as shown and described. 